iPhone X stuck in Apple logo
I have an iPhone X that I bought from someone else , everything was good until it change to apple logo and it stayed like that , I went to a store they put it on a computer they say everything was going to be deleted then I said it’s fine but I guess it didn’t work when he plug it in ? I just wanna know if this is fixable please and why this happen
[Re-Titled by Moderator]
iPhone 8 Plus, iOS 14